Seventy-five years ago, Key Underwood and his raccoon-hunting dog Troop had a connection. Years of training and a deep relationship make human and canine a seamless hunting unit. The two can share a special bond. So when old Troop died, Underwood buried him on the crest of a hill hidden away in the lush countryside near Cherokee, Ala. It was Underwood's favorite hunting spot. He marked the grave with an old chimney stone he chiseled with a hammer and screwdriver. That was the start of Coon Dog Cemetery, according to Franky Hatton, who hunts in this area with his Bluetick...